How to fix inconsistency of mesh into the "body" in 2.80?
The problem seems to be that you have misplaced sharp edges, although I think it was also made worse by duplicate vertices. The first thing I did was merge by distance, which removed 1000+ vertices, then I started selecting the sharpened edges that didn't seem to flow with the rest. I then cleared the sharpened edges. See below:  
The result is a much smoother look, with the offending faces &quot;gone&quot;. I only did this on a handful of edges to test - there are quite a few of these places where you might want to unsharpen the edges, but probably also some others where you want to add some sharpness. You will have to look over your model and decide for yourself.

Hope this helps